Sometimes lxc vm starts hang with blank console or 'connected to tty1'

[rampage]

Hi,

Sometimes my lxc vms will hang after start, only blank starting console without any ouput;

or the console stopped at the 'connected to tty1' ctrl+a q, ctrl + a a, promot and not continue to give the login in promot, (can login via ssh most of the time.)

What could be the problem?
It happens very often.

system is 4.4-5/c43015a5
with local storage for vm (local-zfs)

 

[finlaydag33k]

I have this issue as well, though rebooting the container works for me.
Would like to get rid of it